﻿/*
 * Copyright (c) 2011 Shawn Rakowski
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to 
 * deal in the Software without restriction, including without limitation the 
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 
 * sell copies of the Software, and to permit persons to whom the Software is 
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in 
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
 * SOFTWARE. 
 * 
 */

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using ROS.Application;
using ROS.Application.DTO;
using ROS.Presentation.Views;
using ROS.Presentation.Views.Data;

namespace ROS.Presentation.Presenters
{
    public class AddMenuItemPresenter : Presenter<IAddMenuItemView>
    {
        #region Fields
        #endregion

        #region Properties
        #endregion

        #region Constructor

        public AddMenuItemPresenter(IAddMenuItemView view)
            : base(view)
        {
        }

        #endregion

        #region Methods

        protected override void WireViewEvents()
        {
            view.LoadView += new EventHandler(view_LoadView);
            view.Commit += new EventHandler(view_Commit);
            view.Cancel += new EventHandler(view_Cancel);
            view.AddCategory += new EventHandler(view_AddCategory);
            view.RemoveCategory += new EventHandler(view_RemoveCategory);
        }

        void view_LoadView(object sender, EventArgs e)
        {
            ROSApplication rosAppl = new ROSApplication();
            IList<MenuCategoryDTO> menuCategories;
            rosAppl.GetMenuCategories(out menuCategories);
            List<MenuCategoryViewData> menuCategoryViewDataList = new List<MenuCategoryViewData>();
            foreach (MenuCategoryDTO menuCategory in menuCategories)
            {
                MenuCategoryViewData menuCategoryViewData = new MenuCategoryViewData();
                menuCategoryViewData.ID = menuCategory.ID;
                menuCategoryViewData.Name = menuCategory.Name;
                menuCategoryViewDataList.Add(menuCategoryViewData);
            }
            view.SelectableMenuCategories = menuCategoryViewDataList;
        }

        void view_Commit(object sender, EventArgs e)
        {
            decimal price = GetPrice();
            ROSApplication rosAppl = new ROSApplication();
            List<long> categoryIDs = new List<long>();
            IList<MenuCategoryViewData> selectedMenuCategories = view.SelectedMenuCategories;
            foreach (MenuCategoryViewData menuCategory in selectedMenuCategories)
                categoryIDs.Add(menuCategory.ID);
            rosAppl.AddMenuItem(view.MenuItemName, view.IsBackendFulfilled, price, categoryIDs);
            ViewController.NavigateTo("MenuItemListView");
        }

        void view_Cancel(object sender, EventArgs e)
        {
            ViewController.NavigateTo("MenuItemListView");
        }

        void view_AddCategory(object sender, EventArgs e)
        {
            MenuCategoryViewData menuCategory = view.GetSelectedCategoryFromSelectableCategories();
            if (menuCategory != null)
            {
                view.SelectableMenuCategories.Remove(menuCategory);
                view.SelectedMenuCategories.Add(menuCategory);
                ResetMenuCategoryLists();
            }
        }

        void view_RemoveCategory(object sender, EventArgs e)
        {
            MenuCategoryViewData menuCategory = view.GetSelectedCategoryFromSelectedCategories();
            if (menuCategory != null)
            {
                view.SelectedMenuCategories.Remove(menuCategory);
                view.SelectableMenuCategories.Add(menuCategory);
                ResetMenuCategoryLists();
            }
        }

        protected override void UnwireViewEvents()
        {
            view.LoadView -= new EventHandler(view_LoadView);
            view.Commit -= new EventHandler(view_Commit);
            view.Cancel -= new EventHandler(view_Cancel);
            view.AddCategory -= new EventHandler(view_AddCategory);
            view.RemoveCategory -= new EventHandler(view_RemoveCategory);
        }

        private decimal GetPrice()
        {
            return decimal.Parse(view.Price);
        }

        private void ResetMenuCategoryLists()
        {
            view.SelectedMenuCategories = view.SelectedMenuCategories;
            view.SelectableMenuCategories = view.SelectableMenuCategories;
        }

        #endregion
    }
}